<template>
  <Dialog :title="dialogTitle" v-model="dialogVisible">
    <el-form
      ref="formRef"
      :model="formData"
      :rules="formRules"
      label-width="100px"
      v-loading="formLoading"
    >
      <el-form-item label="班级名称" prop="className">
        <el-input v-model="formData.className" placeholder="请输入班级名称" />
      </el-form-item>
      <el-form-item label="班级编码" prop="classCode">
        <el-input v-model="formData.classCode" placeholder="请输入班级编码" />
      </el-form-item>
      <el-form-item label="年级" prop="grade">
        <el-select v-model="formData.grade" placeholder="请选择年级" style="width: 100%">
          <el-option label="高一" value="高一" />
          <el-option label="高二" value="高二" />
          <el-option label="高三" value="高三" />
        </el-select>
      </el-form-item>
      <el-form-item label="班主任ID" prop="teacherId">
        <el-input v-model="formData.teacherId" placeholder="请输入班主任ID" />
      </el-form-item>

      <el-form-item label="班级描述" prop="description">
        <Editor v-model="formData.description" height="150px" />
      </el-form-item>
      <el-form-item label="状态" prop="status">
        <el-radio-group v-model="formData.status">
          <el-radio
            v-for="dict in getIntDictOptions(DICT_TYPE.CLASS_STATE)"
            :key="dict.value"
            :label="dict.value"
          >
            {{ dict.label }}
          </el-radio>
        </el-radio-group>
      </el-form-item>
    </el-form>
    <template #footer>
      <el-button @click="submitForm" type="primary" :disabled="formLoading">确 定</el-button>
      <el-button @click="dialogVisible = false">取 消</el-button>
    </template>
  </Dialog>
</template>
<script setup lang="ts">
import { getIntDictOptions, DICT_TYPE } from '@/utils/dict'
import { ExamClassApi, ExamClassVO } from '@/api/system/examclass'
import { CommonStatusEnum } from '@/utils/constants'

/** 班级信息 表单 */
defineOptions({ name: 'ExamClassForm' })

const { t } = useI18n() // 国际化
const message = useMessage() // 消息弹窗

const dialogVisible = ref(false) // 弹窗的是否展示
const dialogTitle = ref('') // 弹窗的标题
const formLoading = ref(false) // 表单的加载中：1）修改时的数据加载；2）提交的按钮禁用
const formType = ref('') // 表单的类型：create - 新增；update - 修改
const formData = ref({
  id: undefined,
  className: undefined,
  classCode: undefined,
  grade: undefined,
  teacherId: undefined,
  description: undefined,
  status: CommonStatusEnum.ENABLE,
})
const formRules = reactive({
  className: [{ required: true, message: '班级名称不能为空', trigger: 'blur' }],
  classCode: [{ required: true, message: '班级编码不能为空', trigger: 'blur' }],
  grade: [{ required: true, message: '年级不能为空', trigger: 'blur' }],
  teacherId: [{ required: true, message: '班主任ID不能为空', trigger: 'blur' }],
})
const formRef = ref() // 表单 Ref

/** 监听班级名称变化，自动生成班级编码 */
watch(() => formData.value.className, (newClassName) => {
  if (newClassName && formType.value === 'create') {
    // 只在新增时自动生成班级编码
    // 生成规则：班级名称的拼音首字母 + 时间戳后4位
    const timestamp = Date.now().toString().slice(-4)
    // 简单的编码生成：移除空格并添加时间戳
    const cleanName = newClassName.replace(/\s+/g, '')
    formData.value.classCode = `${cleanName}_${timestamp}`
  }
})

/** 打开弹窗 */
const open = async (type: string, id?: number) => {
  dialogVisible.value = true
  dialogTitle.value = t('action.' + type)
  formType.value = type
  resetForm()
  // 修改时，设置数据
  if (id) {
    formLoading.value = true
    try {
      formData.value = await ExamClassApi.getExamClass(id)
    } finally {
      formLoading.value = false
    }
  } else {
    // 新增时，确保状态默认为正常
    formData.value.status = CommonStatusEnum.ENABLE
  }
}
defineExpose({ open }) // 提供 open 方法，用于打开弹窗

/** 提交表单 */
const emit = defineEmits(['success']) // 定义 success 事件，用于操作成功后的回调
const submitForm = async () => {
  // 校验表单
  await formRef.value.validate()
  // 提交请求
  formLoading.value = true
  try {
    const data = formData.value as unknown as ExamClassVO
    if (formType.value === 'create') {
      await ExamClassApi.createExamClass(data)
      message.success(t('common.createSuccess'))
    } else {
      await ExamClassApi.updateExamClass(data)
      message.success(t('common.updateSuccess'))
    }
    dialogVisible.value = false
    // 发送操作成功的事件
    emit('success')
  } finally {
    formLoading.value = false
  }
}

/** 重置表单 */
const resetForm = () => {
  formData.value = {
    id: undefined,
    className: undefined,
    classCode: undefined,
    grade: undefined,
    teacherId: undefined,
    description: undefined,
    status: CommonStatusEnum.ENABLE,
  }
  formRef.value?.resetFields()
}
</script>
